More than 2.3 million Divvy rides have been taken since the program launched in 2013, program officials said

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The team behind Divvy, Chicago's bike share program, on Thursday announced plans to expand the reach of the transit system to neighborhoods on the city's far north and south sides.

Neighborhoods will get 175 additional Divvy stations and 1,750 new bikes during the spring of 2015, bringing the total to 475 stations and 4,750 bikes. The plans, announced in a blog post, mean Divvy would reach Touhy Avenue on the north, 75th Street on the south, and as far west as Pulaski Road.

More than 2.3 million Divvy rides have been taken since the program launched in 2013, program officials said. But despite boasting more than 23,000 active annual memberships, the program remains unprofitable. Divvy is managed by Portland-based Alta Bicycle Share, with equipment and software supplied by Montreal-based Bixi. Bixi filed for bankruptcy and was bailed out by that city's government in 2011.

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